From: "Javier González" <javier@javigon.com>
To: mb@lightnvm.io
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
"Javier González" <javier@cnexlabs.com>
Subject: [PATCH 01/11] lightnvm: pblk: fail gracefully on line alloc. failure
Date: Mon, 30 Apr 2018 11:09:59 +0200 [thread overview]
Message-ID: <1525079409-6588-2-git-send-email-javier@cnexlabs.com> (raw)
In-Reply-To: <1525079409-6588-1-git-send-email-javier@cnexlabs.com>
In the event of a line failing to allocate, fail gracefully and stop the
pipeline to avoid more write failing in the same place.
Signed-off-by: Javier González <javier@cnexlabs.com>
---
drivers/lightnvm/pblk-init.c | 5 +++++
drivers/lightnvm/pblk-map.c | 33 ++++++++++++++++++++++++---------
2 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 91a5bc2556a3..dee64f91227d 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -1047,6 +1047,11 @@ static int pblk_lines_init(struct pblk *pblk)
nr_free_chks += pblk_setup_line_meta(pblk, line, chunk_meta, i);
}
+ if (!nr_free_chks) {
+ pr_err("pblk: too many bad blocks prevent for sane instance\n");
+ return -EINTR;
+ }
+
pblk_set_provision(pblk, nr_free_chks);
kfree(chunk_meta);
diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c
index 20dbaa89c9df..953ca31dda68 100644
--- a/drivers/lightnvm/pblk-map.c
+++ b/drivers/lightnvm/pblk-map.c
@@ -18,11 +18,11 @@
#include "pblk.h"
-static void pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
- struct ppa_addr *ppa_list,
- unsigned long *lun_bitmap,
- struct pblk_sec_meta *meta_list,
- unsigned int valid_secs)
+static int pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
+ struct ppa_addr *ppa_list,
+ unsigned long *lun_bitmap,
+ struct pblk_sec_meta *meta_list,
+ unsigned int valid_secs)
{
struct pblk_line *line = pblk_line_get_data(pblk);
struct pblk_emeta *emeta;
@@ -35,8 +35,14 @@ static void pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
if (pblk_line_is_full(line)) {
struct pblk_line *prev_line = line;
+ /* If we cannot allocate a new line, make sure to store metadata
+ * on current line and then fail
+ */
line = pblk_line_replace_data(pblk);
pblk_line_close_meta(pblk, prev_line);
+
+ if (!line)
+ return -EINTR;
}
emeta = line->emeta;
@@ -74,6 +80,7 @@ static void pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
}
pblk_down_rq(pblk, ppa_list, nr_secs, lun_bitmap);
+ return 0;
}
void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry,
@@ -87,8 +94,12 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry,
for (i = off; i < rqd->nr_ppas; i += min) {
map_secs = (i + min > valid_secs) ? (valid_secs % min) : min;
- pblk_map_page_data(pblk, sentry + i, &rqd->ppa_list[i],
- lun_bitmap, &meta_list[i], map_secs);
+ if (pblk_map_page_data(pblk, sentry + i, &rqd->ppa_list[i],
+ lun_bitmap, &meta_list[i], map_secs)) {
+ bio_put(rqd->bio);
+ pblk_free_rqd(pblk, rqd, PBLK_WRITE);
+ pblk_pipeline_stop(pblk);
+ }
}
}
@@ -108,8 +119,12 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
for (i = 0; i < rqd->nr_ppas; i += min) {
map_secs = (i + min > valid_secs) ? (valid_secs % min) : min;
- pblk_map_page_data(pblk, sentry + i, &rqd->ppa_list[i],
- lun_bitmap, &meta_list[i], map_secs);
+ if (pblk_map_page_data(pblk, sentry + i, &rqd->ppa_list[i],
+ lun_bitmap, &meta_list[i], map_secs)) {
+ bio_put(rqd->bio);
+ pblk_free_rqd(pblk, rqd, PBLK_WRITE);
+ pblk_pipeline_stop(pblk);
+ }
erase_lun = pblk_ppa_to_pos(geo, rqd->ppa_list[i]);
--
2.7.4
next prev parent reply other threads:[~2018-04-30 9:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-30 9:09 [V2 PATCH 00/11] lightnvm: pblk: small fixes Javier González
2018-04-30 9:09 ` Javier González [this message]
2018-04-30 9:10 ` [PATCH 02/11] lightnvm: pblk: recheck for bad lines at runtime Javier González
2018-04-30 9:10 ` [PATCH 03/11] lightnvm: pblk: check read lba on gc path Javier González
2018-04-30 9:10 ` [PATCH 04/11] lightnvn: pblk: improve error msg on corrupted LBAs Javier González
2018-04-30 9:10 ` [PATCH 05/11] lightnvm: pblk: warn in case of corrupted write buffer Javier González
2018-04-30 9:10 ` [PATCH 06/11] lightnvm: pblk: return NVM_ error on failed submission Javier González
2018-04-30 9:10 ` [PATCH 07/11] lightnvm: pblk: remove unnecessary indirection Javier González
2018-04-30 9:10 ` [PATCH 08/11] lightnvm: pblk: remove unnecessary argument Javier González
2018-04-30 9:10 ` [PATCH 09/11] lightnvm: pblk: check for chunk size before allocating it Javier González
2018-04-30 9:10 ` [PATCH 10/11] lightnvn: pass flag on graceful teardown to targets Javier González
2018-04-30 9:10 ` [PATCH 11/11] lightnvm: pblk: remove dead function Javier González
2018-05-07 13:05 ` [V2 PATCH 00/11] lightnvm: pblk: small fixes Matias Bjørling
-- strict thread matches above, loose matches on Subject: below --
2018-04-16 10:25 [PATCH " Javier González
2018-04-16 10:25 ` [PATCH 01/11] lightnvm: pblk: fail gracefully on line alloc. failure Javier González
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